APP has various meanings in the United States Amy Rank category. Discover the full forms, definitions, and usage contexts of APP in United States Amy Rank.
A minor who has been bound by indentures to serve a shipowner for a specified period usually three or four years in return for instruction in the duties of a deck officer, together with food, accommodation, and such money payments as may be agreed Terms of apprenticeship are governed by Merchant Shipping Acts.
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